DECLARATION OF ACCURACY
`
`I, David Baldwin, declare the following:
`
`1.
`
`2.
`
`3.
`
`4.
`
`5.
`
`I am over 18 years of age and competent to make this declaration.
`
`I am a qualified Japanese to English translator.
`
`I have translated the attached document identified as JPH05-264711.
`
`I affirm that the translated text has been translated and edited to the best of my ability and
`knowledge to accurately reflect the content, meaning, and style of the original text and constitutes
`in every respect a correct and true translation of the original document.
`
`I declare that all statements made herein of my knowledge are true, and that all statements made
`on information and belief are believed to be true, and that these statements were made with the
`knowledge that willful false statements and the like so made are punishable by fine or
`imprisonment, or both, under Section 1001 of Title 18 of the United States Code.
`
`I hereby certify under penalty of perjury under the laws of the United States of America that the foregoing
`is true and correct. Dated and signed on August 8, 2019.
`
`_____________________________
` (Translator’s Signature)
`
`David Baldwin
`_____________________________
`
` (Translator’s Printed Name)
`
`183 Madison Avenue, Suite 416 | New York, NY 10016 | p 917.979.4513 | f 415.525.4313
`600 California Street, 11th Floor | San Francisco, CA 94108 | p 415.400.4538 | f 415.525.4313
`divergent@divergentls.com | www.divergentls.com
`
`IPR2020-00408
`Apple EX1037 Page 1
`
`

`

`(19) Japan Patent Office (JP)
`
`(12) JAPANESE UNEXAMINED PATENT
`APPLICATION PUBLICATION (A)
`
`(11) Patent Application
`Disclosure No.
`JP H5-264711
`(43) Publication Date: October 12, 1993 (Heisei 5)
`
`(51) Int.Cl.5
`G01S
`G09B
`
`5/02
`29/10
`
` Ident. Code
`Z
`Z
`
`Int. Ref. No.
`4240-5J
`7143-2C
`
`FI
`
`Location of Tech. Indication
`
`Examination Request: Yes Total No. of Claims: 1 (Total 10 pages)
`
`(21) Application No. JP H4-92422
`
`(71) Applicant
`
`(22) Date of Filing March 19, 1992
` (Heisei 4)
`
`(72) Inventor
`
`(74) Agent
`
`391066881
`Milli Wave
` 134 Godocho, Hodogaya-ku,
`Yokohama-shi, Kanagawa-ken
`Tadao Yokoyama
`c/o Milli Wave
` 134 Godocho, Hodogaya-ku,
`Yokohama-shi, Kanagawa-ken
`Takemichi Fukuda, Attorney (and 2 others)
`
`(54) [Title of Invention] ON-PREMISES
`GUIDE SYSTEM USING MILLIMETER
`WAVE RADIO
`
`(57) [Abstract]
`[Purpose] To provide an on-premises
`guide system that enables a route to a
`destination to be accurately and quickly
`grasped in the premises of a structure
`such as a station, airport, and the like.
` [Constitution] Corrects
`the
`relative
`angle between a reference direction A set
`in advance for a display device 3 and a
`reception direction of a base station
`transmission wave issued from a base
`station 2, and displays a guide map on a
`display part 4 of the display device 3.
`
`Current
`location
`
`Cur
`rent
`loca
`tion
`
`Current
`location
`
`Base
`station
`transmi
`ssion
`wave
`
`Base
`station
`transmi
`ssion
`wave
`
`Base
`
`station
`transmi
`ssion
`wave
`
`Base
`station
`
`Base
`station
`
`Base
`station
`
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`

`
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`(2)
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`JP H5-264711
`
`1
`
` [Scope of Patent Claims]
` [Claim 1] An on-premises guide system by millimeter wave
`radio, the guide system composed of a base station, installed in
`advance at a plurality of locations in a premises of a structure,
`comprising a transmission and reception function by a highly
`directional millimeter wave; and a transmission and reception
`terminal capable of transmission and reception with this base
`station by millimeter wave, wherein
`the transmission and reception terminal is provided with guide
`map display means for displaying a guide map in a substantially
`horizontal direction based on guide map data of the point where
`the transmission and reception terminal is located and the
`surroundings; relative angle detection means for detecting an
`angle on a substantially horizontal plane formed by a reference
`direction predetermined with respect to the transmission and
`reception terminal and a transmission wave from the receiving
`base station; and guide map data correction means for correcting
`the guide map data of the point where the transmission and
`reception terminal is located and the surroundings based on
`detected information of the relative angle detection means, and
`for making the real environment of the point where the
`transmission and reception
`terminal
`is
`located and
`the
`surroundings relatively equal to a simulated environment of the
`guide map displayed on the transmission and reception terminal.
` [Detailed Description of the Invention]
` [0001]
`[Industrial Applicability] The present invention relates to a guide
`system for performing navigation by millimeter wave radio in
`the premises of structures such as airports and train stations.
` [0002]
`[Prior Art] Using the floor plan of a premises prepared in
`advance and determining the direction based on the guidance
`display provided on a wall or pillar of the premises in order to
`arrive at a desired platform, boarding gate, and the like when
`using the premises of an unknown structure such as a train
`station, airport, and the like when travelling, on business, and the
`like is typical.
` [0003]
` [Problem to be Solved by the Invention] However, at major
`train stations and international airports in large metropolitan
`areas with complicated structures, appropriate guidance displays
`may not always be displayed at short intervals, and it may be
`difficult to find guidance displays. Furthermore, the simulated
`environment described in a guide map or the like prepared in
`advance may differ from the actual real environment, and
`erroneously recognizing a corresponding relationship between
`the simulated environment displayed on the guide map and the
`real environment may cause a misunderstanding of the direction
`or course of the road. In such a case, a delay in reaching the
`destination results in failure to make a connection in a short time,
`ending in missing a desired train or flight, which is a major
`disadvantage for users of the premises.
` [0004] Therefore, it has been desired to develop an on-
`premises guide system that enables a route to a destination to be
`accurately and quickly grasped without relying on a guide
`display plate or the like installed in the premises of a structure
`such as a train station.
` [0005]
`[Means for Solving the Problem] In light of the foregoing, the
`present invention is a guide system composed of a base station
`
`2
`(2), installed in advance at a plurality of locations in a premises
`of a structure and provided with a transmission and reception
`function by a highly directional millimeter wave; and a
`transmission and reception terminal (for example, a display
`device 3) capable of transmission and reception with this base
`state (2) by millimeter wave, wherein the transmission and
`reception terminal (3) is provided with guide map display means
`(18) for displaying a guide map in a substantially horizontal
`direction based on guide map data of the point where the
`transmission and reception terminal (3) is located and the
`surroundings; relative angle detection means (16) for detecting
`an angle on a substantially horizontal plane formed by a
`reference direction (A) predetermined with respect to the
`transmission and reception terminal (3) and a transmission wave
`from the receiving base station (2); and guide map data
`correction means (17) for correcting the guide map data of the
`point where the transmission and reception terminal (3) is
`located and the surroundings based on detected information of
`the relative angle detection means (16), and for making the real
`environment of the point where the transmission and reception
`terminal (3) is located and the surroundings relatively equal to a
`simulated environment of the guide map displayed on the
`transmission and reception terminal.
` [0006]
` [Effect] The processing speed of transmission and reception
`performed between the base station and transmission and
`reception terminal improves since transmission and reception is
`performed by the base station and the transmission and reception
`terminal with a fast transmission speed millimeter wave. Since
`transmission and reception are performed between the base
`station and the transmission and reception terminal by a highly
`directional millimeter wave, the transmission and reception
`terminal can receive the transmission wave of the base station
`from only a fixed direction. As described above, the transmission
`and reception terminal that has received the transmission wave
`of the base station detects an angle formed by the reference
`direction and the direction of the reception wave by the relative
`angle detection means, the guide map data correction means
`corrects the guide map data based on the detected angle, then the
`guide map display means displays the guide map based on the
`guide map data corrected by the guide map data correction
`means.
` [0007]
` [Embodiments] Next, embodiments of the guide system set
`forth in the present invention will be described in detail based on
`attached drawings.
` [0008] A first embodiment of a guide system on premises by
`millimeter wave is illustrated in FIG. 1, wherein a control station
`1 installed in a control room or the like that comprehensively
`controls a structure such as a train station or airport is connected
`to a plurality of a base station 2... capable of transmission and
`reception, for example, via a transmission cable, while the base
`station 2... installed in advance at a predetermined interval (for
`example, at an interval of 5 to 10 meters to a side wall or ceiling
`wall of the premises, etc.) at an appropriate place in the premises
`of the structure is made to be capable of transmission and
`reception with a millimeter wave with a display device 3... as the
`transmission and reception terminal carried by travelers and the
`like.
` [0009] For example, the control station 1, in addition to the
`transmission and reception function for enabling two-way
`communication with the base station 2..., is provided with a
`transmission and reception management control function for
`performing analysis and the like of commands issued from the
`display device 3... via the base station 2..., and is fixedly
`provided with guide map data and the like relating to the layout
`of the premises of the structure. Furthermore, the base station 2...,
`in addition to the transmission and reception function for
`enabling two-way communication with the control station 1 and
`the display device 3…, is provided with location information as
`
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`JP H5-264711
`
`3
`to where the base station 2 is installed, and the control station 1
`can transmit and receive with a specific base station 2 without
`confusing other base stations 2... based on
`the
`location
`information, and it is also possible to specify the area in which
`the display device 3 that is transmitting and receiving with the
`base station 2 is located.
` [0010] Moreover, each display device 3..., in addition to the
`transmission and reception function for enabling transmission
`and reception with the base station 2... by millimeter wave, is
`provided with a radio wave detection function for detecting
`the nearest base station 2 from the location where the display
`device 3 is located, a guide map display function (to be
`described later) for displaying a guide map in a substantially
`horizontal direction based on guide map data (in the present
`embodiment, it is supplied from the control station 1 via the
`base station 2) of the area where the display device 3 is
`located, a relative angle detection means (to be described
`later) for detecting an angle on a substantially horizontal
`plane formed by a reference direction predetermined with
`respect to the display device 3 and a transmission wave from
`the receiving base station 2, and a guide map data correction
`means for correcting the guide map data of the area where the
`display device 3 is located based on detected information of
`the relative angle detection means, and for making the real
`environment of the area where the transmission and reception
`terminal
`is
`located relatively equal
`to
`the simulated
`environment of the guide map displayed on the transmission
`and reception terminal.
` [0011] Note that, the present invention is not limited to a
`configuration such as the above first embodiment in which
`guide map data in the relevant premises are stored and held in
`the control station 1, and necessary guide map data is
`supplied according to a request from the base station 2.... For
`example, in the second embodiment illustrated in FIG. 2, at
`least the transmission and reception function, the location
`information, the guide map data, and the transmission and
`reception management control function are provided in the
`base stations 2'..., and two-way communication is performed
`only between each base station 2' and the display device 3....
`In this case, since commands and data can be transmitted and
`received without the intervention of the control station 1,
`processing speed and the like can be further improved.
` [0012] Furthermore, it may be configured so as to store
`guide map data in the display device 3 serving as the
`transmission and reception terminal. For example, it may be
`configured so that guide map data of the required premises is
`stored in the display device 3 via a data injection writer from
`a computer or the like, or a guide map data storage medium
`such as card-type ROM (IC card, card-shaped magnetic
`memory or the like), CD-ROM or the like in which guide map
`data of specific structures is pre-written is prepared, and by
`replacing the guide map data storage medium, guide map data
`according to each premises can be supplied to the display
`device 3.
` [0013] Next, an embodiment of the display device 3 will be
`described based on FIG. 3. This display device 3 is
`configured from a flat box that is a portable size, having a
`display part 4 configured from a liquid crystal display or the
`like on any surface of the body, and an antenna part 5 capable
`of receiving a millimeter wave issued from the base station 2...
`over 360 degrees in the horizontal direction when the display
`part 4 is maintained in a substantially horizontal direction,
`and an operation button 6 for operating the display
`
`
`
`
`
`
`
`
`4
` device 3 (regardless of whether it is contact type or touch
`sensor type) is provided at an appropriate location on the
`display device 3. Furthermore, a transmission and reception
`management control function related to communication with
`the base station 2... and a battery (regardless of whether it is
`disposable or rechargeable) or the like are provided within the
`display device 3.
` [0014] Note that a hand strap may be attached to the display
`device 3 body and a dedicated storage case for the display
`device 3 formed in the shape of a waist pouch or shoulder bag
`may be provided to increase convenience when carrying the
`display device 3. Furthermore, when configuring the display
`part 4 with a liquid crystal display, it is possible to increase
`visibility of the display part 4 by adding a backlight function.
`Moreover, it is possible to give various additional values in
`addition to the transmission and reception function to the
`display device 3 by providing the display device 3 body with
`additional functions such as an alarm clock, an AM radio, a
`television receiver function, and the like. Furthermore, the
`shape of the display device 3 body, and the arrangement of
`the display part 4, antenna part 5, and the operation button 6
`are not limited to the embodiment of FIG. 3, and for example,
`it is possible to make the display part bigger (or make the
`display device 3 body smaller) provided that the operation
`button is provided on another surface when any other surface
`of the display device 3 body is the front surface display part.
` [0015] As in the foregoing, when various additional
`functions are provided on the display device 3 body, an
`operation switch may be appropriately provided to enable
`control according to each function, yet for example, in the
`display device 3 illustrated in FIG. 3, the operation button 6 is
`configured from six kinds of operation switches ○1 to ○6 for
`performing basic operations. The control details of each
`operation button will be described in the following, ○1 is a
`power switch for turning the power source of the display
`device 3 body on/off. ○2 is a switch for beginning a radio
`wave search with the antenna part 5 and displaying the guide
`map of the area. ○3 is a switch for enlarging the display of the
`area. ○4 is a switch for displaying related facilities serving as
`a target in connection with the area (for example, ticket
`offices, JR ticket offices, restrooms, ticket barriers, and the
`like). ○5 and ○6 are selection switches for performing a
`plurality of displays according to any combination of the
`foregoing ○2 to ○4 .
` [0016] Note that although this is omitted, a simple
`keyboard part or the like may be provided in the foregoing
`operation button 6, whereby destinations (for example, the
`number of a platform), the number of a train to be used, and
`the like are input from the keyboard part, and by transmitting
`the input information to the base station 2..., required
`information is displayed on the display part 4.
` [0017] Next, specific examples of the antenna part 5 will be
`described based on FIG. 4. An antenna 7 also used for
`transmission and receipt is stored in a radome 8 through
`which a millimeter wave can pass, and for example, it is
`possible
`to rotate approximately 360 degrees
`in
`the
`substantially horizontal direction with a waveguide 9 as the
`rotation axis. In order to rotate the antenna 7, a drive gear 11
`attached to a drive shaft 10 capable of obtaining a drive
`output from a drive source such as a small motor and a driven
`gear 12 are engaged with each other, and the waveguide 9
`inserted into the rotational center of the driven gear 12 rotates
`while driving the motor. Thus, while in a state in which the
`
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`(4)
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`JP H5-264711
`
`5
`display part 4 of the display device 3 is held in a
`substantially horizontal direction, the waveguide 9 that is
`located in a substantially vertical direction is rotated, the
`antenna 8 attached
`to
`the waveguide 9
`rotates
`approximately 360 degrees in the substantially horizontal
`direction, therefore it is possible to detect in which
`direction the base station 2 is located.
` [0018] Note that the base station 2... is provided on a
`side wall or ceiling wall of the premises, therefore the
`antenna 7 for receiving base station transmission waves
`issued from any of the base stations 2 can receive
`transmission waves from diagonally above as well as
`transmission waves
`in
`the horizontal direction.
`Furthermore, in the embodiment illustrated in FIG. 4, the
`antenna 7 is a horn antenna, yet for example, the antenna
`part 5 may be configured using an array antenna, a
`microstrip antenna, and the like.
` [0019] As in the foregoing, while the antenna 7 rotates
`at
`an
`appropriate
`speed
`(for
`example,
`100
`rotations/minute) based on the driving force of the drive
`source, the antenna location that can receive the base
`station transmission wave most strongly is detected, and it
`is possible to determine that the base station 2 is located in
`the main beam radiation direction of the antenna 7 at the
`antenna location. Here, as for the search method for
`detecting the direction of the base station 2, even if the
`location where the antenna 7 can receive base station
`transmission waves at a predetermined level or higher is
`defined as the direction in which the base station 2 exists,
`first of all the antenna 7 is rotated once, the maximum
`level of the base station transmission wave in the
`meantime is stored, and it is also possible to stop rotation
`of the antenna 7 at the point where a base station
`transmission wave equal to the maximum level stored
`during the next rotation is received.
` [0020] Furthermore, there are no limits to when rotation
`of the antenna 7 is stopped at the location facing the base
`station 2, and there may be a configuration where rotation
`of the antenna 7 is continued, and the facing location
`between the antenna 7 and the base station 2 is determined
`and updated for each rotation. Moreover, the rotation drive
`structure of the antenna 7 is not limited to the foregoing
`embodiment, and any method can be used provided that
`the transmission direction of base station transmission
`waves can be searched in a substantially horizontal
`direction. Furthermore, from the viewpoint of reducing the
`weight and size of the display device 3 itself, an antenna
`rotation knob or the like may be provided so that the
`antenna 7 can be manually rotated, the antenna location
`where the reception level of the antenna 7 becomes
`maximum may be confirmed by a level meter, and the
`location may be set as the facing location between the
`base station 2 and the antenna 7.
`[0021] As in the foregoing, by detecting the direction of
`the base station 2 with the antenna 7, it is possible to
`obtain the angle formed by the predetermined standby
`location of the antenna 7 and the base station detection
`location, which are determined in advance. For example,
`as illustrated in FIG. 5, the reception direction at the
`predetermined standby location of the antenna 7 with
`respect to the display device 3 body is set as a reference
`direction A, and a relative angle which is an angle formed
`by the base station detection direction with respect to the
`reference direction A can be detected.
`
`6
`For example, in FIG. 5(a) the relative angle is 0 degrees,
`in FIG. 5(b) the relative angle is 90 degrees, and in FIG.
`5(c) the relative angle is 135 degrees.
` [0022] Also, the display state of the guide map displayed
`on the display part 4 of the display device 3 is corrected
`using the relative angle obtained as described above, and
`the outline thereof will be described below. For example,
`if the relative angle is 0 degrees, it is displayed as is
`without performing correction of the guide map data (see
`FIG. 5(a)), if the relative angle is 90 degrees, the guide
`map data is corrected and displayed so that the display of
`the guide map is rotated 90 degrees in the direction in
`which the relative angle shift occurs (see FIG. 5(b)), and if
`the relative angle 135 degrees, the guide map data is
`corrected and displayed so that the display of the 135
`degree guide map is rotated in the direction in which the
`relative angle shift occurs (see FIG. 5(c)).
` [0023] By doing this, regardless of the direction in
`which the person carrying the display device 3 holds the
`display device 3, it is displayed on the display part 4 of the
`display device 3 so that the display details of the guide
`map are in a fixed direction with respect to the base
`station 2. That is, in the embodiment illustrated in FIG. 5,
`in order for the angle formed by the main beam radiation
`direction of the base station transmission wave and the
`reference direction A in the display device 3 to be zero,
`when the display part 4 of the display device 3 is held in a
`substantially horizontal direction, if displayed on the
`display part 4 of the display device 3 without correcting
`the guide map data, the guide map data supplied from the
`base station 2 to the display device 3 is set in advance so
`that the line connecting the base station 2 and the display
`device 3 in the real environment becomes parallel to the
`reference direction A in the simulated environment of the
`guide map displayed on the display part 4. Therefore, by
`correcting the guide map data only by an angle on the
`substantially horizontal plane formed by the reference
`direction A predetermined with respect to the display
`device 3 and the transmission wave from the base station 2
`being received, it becomes possible to relatively equalize
`the real environment of the area where the display device
`3 is located and the simulated environment of the guide
`map displayed on the display part 4 of the display device 3.
` [0024] Note that even when the guide map data supplied
`from the base station 2 to the display device 3 is not set in
`advance in a state in which the transmission direction of
`the base station 2 is considered, the correction angle is
`determined in advance as one of the location information
`of the base station 2 so that the transmission direction of
`the base station 2 in the simulated environment on the
`display based on the guide map data and the transmission
`direction of the base station 2 in the real environment are
`parallel to each other, the guide map data is corrected in
`each display device 3 by the correction angle only, and
`moreover, provided that the angle formed by the reference
`direction A in the display device 3 and the transmission
`direction of the base station 2 is corrected, it becomes
`possible to relatively equalize the real environment in the
`area where the carrier of the display device 3 is located
`and
`the simulated environment on
`the guide map
`displayed on the display part 4 of the display device 3.
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`[0025] Note that the relative positional relationship
`between the base station 2 and the display device 3 is
`such that only the transmission and reception direction is
`the determining factor, thus it is not possible to
`determine the distance between the two, and it is
`relatively difficult to accurately grasp the point where the
`carrier of display device 3 is located and display it on the
`guide map of the display part 4. However, provided that
`the base stations 2 are arranged at relatively short
`distance intervals, if the carrier of the display device 3
`moves several meters and the base station 2 capable of
`transmission and reception is changed, it is possible to
`grasp the most probable region where the carrier of the
`display device 3 is located with a calculation error of
`several meters, and provided that it can recognize the
`current location as a guide map on a wide premises, there
`are no such impediments.
` [0026] Furthermore, since the millimeter wave used for
`transmission and reception between the base station 2
`and the display device 3 is highly directional, the region
`capable of receiving millimeter waves issued from base
`station 2 is limited to a certain extent, so there is also a
`possibility that a blind spot where transmission and
`reception cannot be carried out by any of the base
`stations 2 may occur. However, provided that each base
`station 2 is provided with a plurality of a transmission
`and
`reception antenna each directed
`in different
`directions, it is possible to cover a wider region wherein
`transmission and reception is possible from the display
`device 3. Note that instances may occur where the
`reception level of base station transmission waves issued
`from two or more base stations 2... become substantially
`the same level due to the radiation state of transmission
`waves from the base station 2..., yet in such an instance,
`by determining in advance the reference level at which
`reception is possible in the display unit 3 and setting so
`that the reception level of transmission waves issued
`from any base station also does not to reach the reference
`level, it is possible to prevent excessive interference of
`the plurality of base stations 2.
` [0027] Next, a specific configuration example of the
`correction and display functions of the guide map data of
`the display device 3 will be described based on FIG. 6.
`Note that in the present embodiment, the guide map data
`of the structure on the premises is supplied by the base
`station 2, and similar to the embodiment illustrated in
`FIG. 5, if guide map data is displayed on the display part
`4 of the display device 3 without correction, the guide
`map data supplied from the base station 2 to the display
`device 3 is set in advance so that the line connecting the
`base station 2 and the display device 3 in the real
`environment becomes parallel to the reference direction
`A in the simulated environment of the guide map
`displayed on the display part 4. Furthermore, functions
`such as sending out a command from the display device
`3 to the base station 2 based on the operation or the like
`of the operation button 6 will be omitted.
` [0028] The antenna 7 of the display device 3, as
`mentioned
`in
`the foregoing, performs 360 degree
`detection in the horizontal direction by antenna drive
`means 13 such as a small motor, and the signal received
`by
`the antenna 7
`is supplied
`to reception
`level
`comparison determining means 14 and guide map data
`storage means 15, and guide map data obtained from the
`transmission wave of the base station 2 is stored and held
`
`8
`in the guide map data storage means 15. Meanwhile, an
`angle rotated from the predetermined standby position of
`the antenna 7 by relative angle detection means 16 is
`detected by the antenna drive means 13 driving the
`antenna 7, and the angle detected by the relative angle
`detection means 16 is always supplied to guide map data
`correction means 17.
`level comparison
`the reception
` [0029] Also,
`if
`determining means 14 for determining whether the level
`of the transmission wave received from the base station 2
`is at the predetermined reference level determines that
`the reception level has reached the reference level, a
`signal to that effect is supplied to the foregoing guide
`map data correction means 17, and when the signal is
`input the guide map data correction means 17 recognizes
`the angle supplied from the relative angle detection
`means 16 as relative angle detection information. Based
`on the relative angle detection information thus obtained,
`the guide map data correction means 17 corrects the
`guide map data supplied from the guide map data storage
`means 15, and the corrected guide map data is supplied
`to a frame memory 19 of guide map display means 18.
` [0030] As in the foregoing, the same display details are
`continuously displayed on the display part 4 by the frame
`memory 19 storing the guide map data corrected by the
`guide map data correction means 17. Note that in the
`embodiment illustrated in FIG. 6, even after the guide
`map display has been formed once, the antenna drive
`means 13, reception level comparison determining means
`14, guide map data storage means 15, relative angle
`detection means 16, and guide map data correction
`means 17 function continuously. Even if the carrier of
`the display device 3 changes the holding direction of the
`display device 3 or moves toward the destination, guide
`map data is sequentially supplied from the base station 2,
`correction of the guide map data is performed, and it is
`possible to display an appropriate guide map on the
`display part 4 at all times.
`[0031] Next, an example of the flow of the process of
`correcting the guide map displayed on the display part 4
`of the display device 3 as described above will be
`described based on the flowchart of FIG. 7.
` [0032] For example, when the power source turns on
`and a command is issued to begin detection of base
`station transmission waves, the display device 3 receives
`a base station radio wave with the antenna 7, the radio
`wave level of the received radio wave is measured, the
`measured value is stored as a, then it is determined
`whether the measured value a is equal to or greater than
`the predetermined reference level, and if the current
`measured value a does not reach the reference level, a
`pulse motor which is the antenna drive source 13 is
`turned on, and the antenna 7 is rotated only by a
`predetermined angle based on the pulse input. Note that
`by integrating supplied pulses to the pulse motor, the
`angle at which the antenna 7 has been rotated in
`accordance with the rotation of the motor from the
`reference standby position of the antenna 7 is determined.
` [0033] As in the foregoing, when in a state where the
`rotation angle of the antenna 7 has been changed, the
`base station radio wave is received again, and processing
`is performed to determine whether the measured value a
`of the radio wave level is equal to or higher than the
`reference level. If the measured value a does not reach
`the reference
`
`IPR2020-00408
`Apple EX1037 Page 6
`
`

`

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`(6)
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`JP H5-264711
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`9
`level, similar to the foregoing, onl